License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
José Guadalupe Posada. A clown standing with one hand on his hip and an elephant peering out from behind a curtain, illustration for 'El Clown Mexicano (The Mexican Clown)' published by Antonio Vanegas Arroyo, ca. 1880–1910 (a later impression). The Metropolitan Museum of Art.